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Mandy Nevel

Senior Veterinary Manager



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African Swine Fever

Home \ Health & Welfare \ Health \ Emerging diseases \ African Swine Fever

African swine fever is a notifiable animal disease. If you suspect it, you must report it immediately by calling the Defra Rural Services Helpline on 03000 200 301

African Swine Fever (ASF) is a highly contagious disease of pigs, warthogs, European wild boar and American wild pigs. All age groups are equally susceptible. With high-virulence forms of the virus, ASF is characterised by high fever, loss of appetite, haemorrhages in the skin and internal organs, and death in 2-10 days on average. Mortality rates may be as high as 100%.

ASF is circulating and well-established within parts of Europe, Russia and China, with a reservoir of infection in the wild boar population. The disease is listed on the World Organisation of Animal Health (OIE) Terrestrial Animal Health Code, reportable to the OIE if identified. The disease is also notifiable by law in the UK, with more information available on the Defra website.

Watch more videos about ASF


The European Food Safety Authority (EFSA) has produced a practical guide on African swine fever: what it is and how to protect domestic pigs from infection (below).

From causes and symptoms, to precautionary measures, a list of best practices on how to protect farm animals and wild boar populations from ASF.